A hydraulic control system for a filling isolation frame and a split-type hydraulic support for filling.

By designing a split-type filling hydraulic support and utilizing an automatic control system of a pushing hydraulic cylinder and an upper telescopic hydraulic cylinder, the problems of movement difficulties and overflow during the solidification of grease in traditional hydraulic supports were solved, achieving efficient coal mining and isolation operations and reducing costs.

CN224432567UActive Publication Date: 2026-06-30兖矿东华装备制造(泰安)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
兖矿东华装备制造(泰安)有限公司
Filing Date
2025-09-05
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional hydraulic supports for paste filling cannot be moved during the solidification of the paste, resulting in reduced coal mining time, low isolation efficiency, high cost, and difficulty in paste overflow and cleaning, which affects filling efficiency.

Method used

The design incorporates a split-type filling hydraulic support, employing a push hydraulic cylinder and an upper telescopic hydraulic cylinder, combined with an electro-hydraulic directional valve, a hydraulically controlled check valve, a pressure sensor, and a safety valve. This enables automatic judgment and execution of operations, ensuring the hydraulic cylinder remains stable when the top plate is soft or broken, thus preventing paste overflow.

Benefits of technology

It improved the stability and efficiency of filling and isolation operations, reduced coal mining costs, reduced paste overflow and cleaning difficulties, and improved overall operational efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the technical field of split-type filling hydraulic supports, specifically disclosing a hydraulic control system for a filling isolation frame and a split-type filling hydraulic support. The hydraulic control system of this utility model, applied to a split-type filling hydraulic support, connects to an electro-hydraulic directional valve and a pressure sensor via a controller signal. This enables automatic judgment and execution of the telescopic and pushing hydraulic cylinders on the filling isolation frame, allowing for automatic pressurization and fluid replenishment. When the top plate is soft or broken, it prevents a decrease in the initial supporting force of the telescopic hydraulic cylinder, thus avoiding a gap between the upper isolation body and the top plate. During the extension of the pushing hydraulic cylinder, it prevents a decrease in pressure in the rear chamber of the pushing hydraulic cylinder, which could cause the base to move forward under the thrust of unsolidified paste, thereby preventing paste overflow.
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